Emily and Alan are professional travel photographers, and they love taking beautiful pictures of nature. They have a big creative project to document how a famous national forest changes during the year. They visit the exact same forest four times to see the incredible transformation of the trees. First, they arrive in spring, when the weather is warm and beautiful green leaves are growing. The forest is full of colorful flowers, and they can hear the sweet birds singing in the morning. Next, they visit the forest in summer during the hottest months of the complete annual cycle. The sun is shining brightly, the trees are completely green, and a lot of wild animals are running around. After that, they return in autumn when the cold wind starts to blow through the mountain valley. The beautiful leaves are turning yellow, orange, and red, and they are falling slowly to the ground. Finally, they explore the forest in winter when the weather is freezing and very dark. The tall trees are empty, and a white snow is covering the quiet landscape.